21041000

素因数分解:

$2^3\times 5^3\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 50291280

約数和(自身を除く): 29250280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 100, 106, 125, 200, 212, 250, 265, 397, 424, 500, 530, 794, 1000, 1060, 1325, 1588, 1985, 2120, 2650, 3176, 3970, 5300, 6625, 7940, 9925, 10600, 13250, 15880, 19850, 21041, 26500, 39700, 42082, 49625, 53000, 79400, 84164, 99250, 105205, 168328, 198500, 210410, 397000, 420820, 526025, 841640, 1052050, 2104100, 2630125, 4208200, 5260250, 10520500, 21041000]

約数ペア:

[(1, 21041000), (2, 10520500), (4, 5260250), (5, 4208200), (8, 2630125), (10, 2104100), (20, 1052050), (25, 841640), (40, 526025), (50, 420820), (53, 397000), (100, 210410), (106, 198500), (125, 168328), (200, 105205), (212, 99250), (250, 84164), (265, 79400), (397, 53000), (424, 49625), (500, 42082), (530, 39700), (794, 26500), (1000, 21041), (1060, 19850), (1325, 15880), (1588, 13250), (1985, 10600), (2120, 9925), (2650, 7940), (3176, 6625), (3970, 5300)]